// JavaScript Document

function checkFields()
{
  if (document.form1.name.value == "")
  {
     alert("Please enter your name.");
     form1.name.focus();
     return false;
  }


  if ((document.form1.email.value == "") ||
  (document.form1.email.value.indexOf('@') == -1) ||
  (document.form1.email.value.indexOf('.') == -1))
  {
     alert("Please enter a valid email address.");
     form1.email.focus();
     return false;
  }
  
  if (document.form1.comments.value == "")
  {
     alert("Please enter your comments!");
     form1.comments.focus();
     return false;
  }
  
  return true;
}